Sirius Symboli is a horse girl character from Uma Musume: Pretty Derby, based on the real-life racehorse of the same name. In the series, she is portrayed as a cool, proud, and highly skilled competitor with a strong sense of confidence. She stands out as an elite racer and a respected presence among the other Uma Musume, often embodying determination and sharp athletic talent. Her role is that of a prominent rival and impressive performer in the racing world.